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Patent Searching and Data


Matches 601 - 650 out of 8,689

Document Document Title
WO/2013/023454A1
A pumping device comprises: a first pumping cylinder (1) and a second pumping cylinder (2), a first piston (31) being disposed in the first pumping cylinder (1) and a second piston (32) being disposed in the second pumping cylinder (2); ...  
WO/2013/006423A3
A pump system includes a closed-loop fluid circuit and an open-loop fluid circuit. The closed-loop fluid circuit includes a motor for rotating a first component connected to the closed-loop fluid circuit. A closed-loop pump drives the mo...  
WO/2013/022131A1
The present invention relates to a hydraulic control system for construction machinery capable of supplying a working fluid from a hydraulic pump to both an arm cylinder and a bucket cylinder and operating same, while performing a comple...  
WO/2013/020913A1
A sliding valve (10) is described, with a valve slide (20) which can be acted upon in a first direction by an actuator (48) and in a second direction opposite to the first direction by an actuation device (44) and which, by means of cont...  
WO/2012/166520A3
A hydraulic fluid system (150) for a mobile machine (100) includes a closed loop hydraulic fan circuit (10). The hydraulic fan circuit (10) includes a primary pump (14), a motor (18) fluidly connected to the primary pump (14), and a fan ...  
WO/2013/022132A1
The present invention relates to a hydraulic control system for construction machinery capable of variably adjusting a set pressure of a relief valve, which controls a set pressure of a hydraulic system, according to a value inputted by ...  
WO/2013/013760A1
The invention relates to a valve device for influencing a supply of fluid to fluidically operated consumer units, comprising a valve module (2) that has a valve housing (4) in which valve shafts (33) for receiving valve cartridges (32) a...  
WO/2013/015467A1
Disclosed is a hydraulic system for controlling the degree of openness of an arm regeneration valve by driving an electronic proportional control valve during a combined operation of simultaneously operating an arm and a swing device. Th...  
WO/2013/013743A1
Proposed is a multi-way valve (1) which has two valve units (2a, 2b) with two valve elements (17a, 17b) arranged in a common receiving bore (15). Each valve element (17a, 17b) can be positioned selectively in an outer switching position,...  
WO/2012/166225A3
A hydraulic control system (48) for a machine (10) is disclosed. The hydraulic control system may have a hydraulic circuit (50), and a pump (58) configured to supply pressurized fluid to the hydraulic circuit. The hydraulic control syste...  
WO/2012/102986A3
A pneumatic manifold for a braking system of a railway vehicle includes a first manifold section and a second manifold section, each having an interior surface thereon and a plurality of ports and passageways extending therethrough, and ...  
WO/2013/008964A1
Disclosed is an actuator damping control system for reducing shocks imparted to a hydraulic actuator caused by a change in load resulting from an abrupt manipulation of a boom or other working device. The hydraulic actuator damping contr...  
WO/2013/009601A1
A poppet valve assembly (262, 462) includes a body (294, 494) and first and second check valves (293, 493). The body (294, 494) includes opposing first and second axial end portions (300, 500). The first end portion has a first circumfer...  
WO/2013/008965A1
Disclosed is a flow control valve for easily performing multiple operations while simultaneously operating a working device, such as an arm, and a swing device by either limiting a portion of a working fluid supplied to the working devic...  
WO/2013/004521A2
The present invention relates to a braking system module (1), such as an coilbox (2), comprising a housing (3) and a connector (6). The connector comprises a connector body (7) and contact elements (8) defining a connection interface (9)...  
WO/2013/006423A2
A pump system includes a closed-loop fluid circuit and an open-loop fluid circuit. The closed-loop fluid circuit includes a motor for rotating a first component connected to the closed-loop fluid circuit. A closed-loop pump drives the mo...  
WO/2012/154462A3
A method and apparatus for controlling discharge pressure and pump displacement of a plurality of variable displacement hydraulic pumps (102, 103) having connected discharge ports (206) is provided. Each pump (102, 103) includes a swashp...  
WO/2012/148961A3
The present disclosure sets forth an axial piston pump with greatly improved throughput. The axial piston pump provides cylinders, antechambers, and fluid flow apertures which are uniquely shaped and dimensioned so as to increase the ove...  
WO/2012/145290A3
First and second mechanical hydraulic valves (342, 340) are disposed between a pump (180) and the cap side chamber (170) of an actuator (132) and the pump (180) and the rod chamber (168) of the pump (180). The first and second valves (34...  
WO/2012/145208A3
A hydraulic system (104, 250) includes an actuator (132, 260), a pump (180, 258), rod side and cap side fluid connections (172, 174, 261, 259) between the pump (180, 258) and the rod and cap side chambers (168, 262, 170, 259), respective...  
WO/2012/154464A3
This disclosure provides for pressure limiting a hydraulic system (100, 200) to a desired pressure value by a particular circuit by controlling and closing the compensator when the desired pressure setting is achieved. Closing the compen...  
WO/2013/002429A1
Provided is a hydraulic control valve in which a center bypass passage is not blocked, but is unloaded when a swing and an arm are operated at the same time to prevent the pressure in a hydraulic pump from being increased. The hydraulic ...  
WO/2012/176314A1
The present invention provides an electro-hydraulic hybrid drive device (100) that drives a hydraulic cylinder (500). This electro-hydraulic hybrid drive device (100) is equipped with: a hydraulic pump (110) capable of rotation in both t...  
WO/2012/154463A3
Methods, apparatuses, and computer program products for controlling the torque load of multiple variable displacement hydraulic pumps are described herein. A pump displacement limit for each variable displacement hydraulic pump is determ...  
WO/2012/173815A2
A closed hydrostatic circuit (10) with variable charge and variable flushing systems is disclosed. A variable displacement charge pump (47) is configured to supply charge fluid and pilot control fluid to the hydrostatic circuit. An elect...  
WO/2012/169676A1
Disclosed is a hydraulic system for construction machinery adapted to prevent the occurrence of off-course travel when performing a composite action on a working device such as a boom and vehicle travel. In the hydraulic system for const...  
WO/2012/165674A1
Disclosed is an open center-type load sensing hydraulic system for securing operability and responsiveness of the open center-type hydraulic system, and for bypassing a discharge volume of a hydraulic pump to a hydraulic tank when a cont...  
WO/2012/165933A1
The invention relates to engineering hydraulics, in particular to hydraulic drives with closed working fluid circulation system used, for example, in mechanical engineering, shipbuilding, machine-tool and aircraft building. The hydraulic...  
WO/2012/166223A2
A hydraulic control system (48) is disclosed. The hydraulic control system may have a hydraulic actuator (20), a valve arrangement (54), and an operator input device (98) configured to generate a first signal indicative of a desired hydr...  
WO/2012/166589A1
A hydraulic fan circuit (10) includes a primary pump (14), a motor (18) fluidly connected to the primary pump (14), and a fan (20) operably connected to and driven by the motor (18). The circuit (10) also includes a supply passage (26) e...  
WO/2012/166225A2
A hydraulic control system (48) for a machine (10) is disclosed. The hydraulic control system may have a hydraulic circuit (50), and a pump (58) configured to supply pressurized fluid to the hydraulic circuit. The hydraulic control syste...  
WO/2012/135242A3
A system (55) for controlling power in a machine (10) includes an interface (56) and a controller (58) configured to receive a signal indicative of a requested hydraulic operation of a hydraulic actuator (24) corresponding to a requested...  
WO/2012/111931A3
The present invention pertains to a solenoid pump and an actuator including the same. More specifically, the solenoid pump includes a housing; a driving coil which is wound on the inside of the housing and fixed thereto; a magnetic plung...  
WO/2012/166520A2
A hydraulic fluid system (150) for a mobile machine (100) includes a closed loop hydraulic fan circuit (10). The hydraulic fan circuit (10) includes a primary pump (14), a motor (18) fluidly connected to the primary pump (14), and a fan ...  
WO/2012/162235A2
A pump system (24) is disclosed. The pump system may have a pump (28) with a displacement that is variable, and an actuator (34) movable to adjust the displacement of the pump. The pump system may also have an electro- hydraulic valve (3...  
WO/2012/096526A3
The present invention relates to a method for controlling a hydraulic pump of a wheel loader, in which the flow rate of the hydraulic pump is reduced to improve the acceleration performance of the wheel loader when there is a request for...  
WO/2012/162638A1
A valve assembly includes an electronics housing (14) and a valve housing assembly (12) engaged to the electronics housing. The valve housing assembly includes a valve body (16) defining a plurality of fluid ports (39) in fluid communica...  
WO/2012/118773A3
A hydraulic control system (48) is disclosed. The hydraulic control system may have a pump (52), a plurality of actuators (20, 26), and a plurality of valve arrangements (54, 56) configured to meter pressurized. The hydraulic control sys...  
WO/2012/154462A2
A method and apparatus for controlling discharge pressure and pump displacement of a plurality of variable displacement hydraulic pumps (102, 103) having connected discharge ports (206) is provided. Each pump (102, 103) includes a swashp...  
WO/2012/153429A1
In relation to fluid pressure devices, a connection apparatus (18a, 18b), by which a filter (12), a regulator (14) and a lubricator (16) that constitute a fluid pressure unit (10) are mutually connected, is equipped with a base member (8...  
WO/2012/154463A2
Methods, apparatuses, and computer program products for controlling the torque load of multiple variable displacement hydraulic pumps are described herein. A pump displacement limit for each variable displacement hydraulic pump is determ...  
WO/2012/154464A2
This disclosure provides for pressure limiting a hydraulic system (100, 200) to a desired pressure value by a particular circuit by controlling and closing the compensator when the desired pressure setting is achieved. Closing the compen...  
WO/2012/122203A3
An unloader assembly and method for unloading a compressor, with the unloader assembly including one or more fingers configured to engage one or more valve elements of a suction valve of the compressor. The unloader assembly also include...  
WO/2011/107235A3
The invention relates to a multi-way valve, which comprises a valve spool (16) disposed in a control chamber (5). On at least one end region, the valve spool (16) has a bearing section (27, 28) which can cover a feed opening (13a, 13b). ...  
WO/2012/149902A1
A float-type servo valve for controlling fluids, comprising a valve body (10); a torque motor (20); pilot stage and power stage control mechanisms; and a valve body (10) upper valve block (11), middle divider (12), and lower valve block ...  
WO/2012/149005A2
A reciprocating pump comprises a cylinder, an inlet check valve, a piston, an outlet check valve and a purge circuit. The cylinder has a first end and a second end. The inlet check valve is disposed proximate a first end of the cylinder....  
WO/2012/148961A2
The present disclosure sets forth an axial piston pump with greatly improved throughput. The axial piston pump provides cylinders, antechambers, and fluid flow apertures which are uniquely shaped and dimensioned so as to increase the ove...  
WO/2012/118698A3
A two-stage, variable force, solenoid control valve (10) for regulating fluid pressure can include a valve body (12) having a pilot fluid passage (14), including a metering land (16), in fluid communication with a flow amplifying fluid p...  
WO/2012/144665A1
Disclosed is a hydraulic circuit for controlling booms of construction equipment, wherein working oil which is relieved from a large chamber of a boom cylinder passes through an orifice so as to prevent the boom from lowering if an overl...  
WO/2012/145290A2
First and second mechanical hydraulic valves (342, 340) are disposed between a pump (180) and the cap side chamber (170) of an actuator (132) and the pump (180) and the rod chamber (168) of the pump (180). The first and second valves (34...  

Matches 601 - 650 out of 8,689